Improvement in flour-bolts



UNITED STATES PATENT GEEICE.

JACoB WIsTEE, oF GREENoAs/TLE, PENNSYLVANIA.

i M P RovEM ENT IN FLou R-eoLTs.

Specification forming part of Letters Patent NO. 36,317, dated August 2G, 1862.

To wllwtom/ it may concern:

Beit known that I, JACOB W1s'rEE,of Greencastle, in the count y of Franklin and State of Pennsylvania, liaveinvented a newT and use-y ful Improvement in Knockers for Flour-Bolts;

' and I do hereby declare that the following is a consists `in an arrangement -of braces and knoekers 'carried upon the ribs of the-'bolt without immediate connection with theshaft v ofthe bolt.

In the accompanying drawings,Figure l is ay top view ofthe frame of a flour-bolt with my arrangement of knoekers attached. `Fig. 2 isa transverse section ofthe same, giving a l side view ot my braces or slideirods for the knoekers,

The shaft A, the ribs B, and the spokes C may be of the usual construction. Upon the ribs B, I attach iheslide-rods I) in pairs, the rods being curved, as shown in Fig. 2, so as tocolnpletely brace the ribs and hold them in4 a fixed position upon the spokes G. The rods l D are provided with stops d to limit the motion ofthe knoekers or sliding balls E. The stops d arenot placed opposite cach other on the slide-rods, but so arranged that the lower ball (on each pair of rods) starts first to slide down-'thus giving a doublev str-olie for each pair of rods, and in this way completely elearing the bolt by giving a jar sufficient to detach the particles of flour from-the. canvas. It will be seen that the knockers act chiefly upon the ribs, (and not upon the spokes, as' is cornn1on with other bolts,) thus shaking the canvas andv eti'ectually clearing the same. One greatadivantage is Athe jar produced upon theupper rib, whe-rethe canvas is in postonto bey ther oughly cleared of the inestour, whiehnsu ally adheres tenaciously to theeanvas or bo1t` ing-cloth and clogs the'bolt.

My new arrangement of knockers -is very cheaply made, and is not only durable in I `self, but it alsoqstrengthens and protectsthe bolt-frame.' With my curved braces Dthe bolt-frame maybe constructed with a lessm'lms' berof spokes, and yet be sufiicientlyjstron'g. The balls E may he fastened or fixed upon the rods D bythe common method when necessary.

I am awvare that various kinds of sliding kho'ckers' have been used upon ilour-bnltsulv Therefore I confine my claim tov thearrangement by which the knockers act uponthe'rbs and not upon the shaft.

Havi n gthus fully described my arrangement of k nockers, what I claim` and desire to secure by Let-ters Patent of the `United States, is-

- The use of the sliderods or braces D, ex i tending from rib 4to rib and carrying sliding balls or knockers E, thus bracingthe ribs and'.

at the same tmebringing the action of .the

knockers chiefly upon the ribs and bolting-i cloth, substantially in the. manner and foryth'e purposes set forth.

. .JACOB WISTER.

\Vitnesscs: EDM. F. moWN,

DANIEL BREED. 

